<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<form action="/cleaner/hello" method="post">
用户名:
<input type="text" name="uname">
密码:
<input type="password" name="upwd">
<input type="submit" value="登录">
</form>
</body>
</html>